Comment 617 for bug 1690085

(In reply to Borislav Petkov from comment #529)
> (In reply to Klaus Mueller from comment #528)
> > What's the downside of generally disabling mwait?
>
> So in your case, you can't do MWAIT to enter C1 anyway because your
> revision doesn't support it. This is why you're seeing those firmware
> messages.

Hmm, if rev. 1 doesn't support MWAIT - why can it be a problem anyway at the same time which must be fixed by disabling the usage of MWAIT? I seem to miss something?

>
> > I'm using a Ryzen 7 1700X and don't have any problem ("fixed" it w/
> > 200 MHz of CPU Overclocking). The only thing I see, is, that the ACPI
> > firmware bug messages disappear. That's all.
>
> That's an "interesting" way to fix it but if it works ... :)
>
> The intention of the fix is to make idle=halt the default for obvious
> reasons.

Isn't this already done automatically if MWAIT isn't supported?